NBC developing Johnny Carson miniseries

The network said Thursday that it is developing a miniseries based on the life of the talk show host, who ruled late-night television as host of the "Tonight" show from 1962 to 1992.

The series will be based on an upcoming biography of Carson by Bill Zehme. It will cover his childhood in Nebraska and his off-screen life as well as the 30 years he spent at the "Tonight" show. The network hasn't cast an actor to play Carson yet.